I acquired a old 8" SCT, pre XLT. I think it's in the 1980-90 range based on the serial Was fork mounted I am now running on a EQ6R pro and ASIair.My question is to: "Starzonia owners": (being a Stellarvue refractor guy) would I see a significant or noticeable improvement with AP by upgrading to the Starazonia flattener? The scope cost me about what the starzonia costs. This image attached was taken last night using the Celestron flattener with (115) 300 sec lights and the Asi2600mc pro/L-Extreme filter. I just wonder it the Starazonia is worth the cost to upgrade? 
NGC1419 - SH2-206 The Fossil Footprint Nebula[b].[/b]
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Personally I was struggling with the Celestron 6.3 - things like autofocus routice would not work as well due to distortion at the edges. I got the Starizona one and I love it. Check here C8 (from 1990) and Starizona reducer flattener: Veil: https://www.astrobin.com/cxj1dk/M27: https://www.astrobin.com/1ibcf3/ (this was my first image with the setup, so backfocus etc was not perfect)
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I didn't pixel peep into your corners but that's a beatuiful image Ed Litoborski:
I acquired a old 8" SCT, pre XLT. I think it's in the 1980-90 range based on the serial Was fork mounted I am now running on a EQ6R pro and ASIair.
My question is to: "Starzonia owners": (being a Stellarvue refractor guy) would I see a significant or noticeable improvement with AP by upgrading to the Starazonia flattener?
The scope cost me about what the starzonia costs. This image attached was taken last night using the Celestron flattener with (115) 300 sec lights and the Asi2600mc pro/L-Extreme filter.
I just wonder it the Starazonia is worth the cost to upgrade?
NGC1419 - SH2-206 The Fossil Footprint Nebula
[b].[/b] I didn't pixel peep into the corners but that's a beautiful image. I'm not sure what you're chasing here?
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I used a Celestron F6.3 ruducer/ flattened years ago, also with a vintage 2000 year C8. I found it inadequate even with small CCD chips of that period. You have to remember that that reducer was designed over 20 yrs. ago, and as far I know the design was never upgraded. It is OK for visual, but totally inadequate for today's larger CMOS cameras.
I have used the Starizona F7.4 SCT reducer with Sony ICX 694 & 814 chips on a C11 & C9.25. It worked well. I now use thw newer IV F6.3 version on a C9.25 with a IMX 571 ASP-C size chip. It flattened field well.
Yes, the Starizona reducer is superior.
Lynn K.
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Yes, definitly go with the Starizona Reducer/Flatnner. Like Lynn said above the Celestron x0.63 Reducer/Flatnner was designed 20 years ago and the image circle covers only 15mm in diagonal (told me by the tech support of Celestron). Most sensors now beside the IMX533 and planetary/guide sensors, are in diagonal above that, at least 23mm, which makes them outside of the image circle of that corrector. The Starizona covers sensors up to the IMX571 (which from what I see is your camera), so yes you should go with a Starizona one.
I'm an owner of a C8 from late 1999-2000's btw..
Regards,
Cesar
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Ed Litoborski:
I just wonder it the Starazonia is worth the cost to upgrade? The Starizona 6.3 reducer's spot size is significantly smaller than the celestron one, your sharpness will increase across the entire FOV- infact it'll be smaller even at center vs an uncorrected field. Its a nearly 2 times increase in sharpness. It's similar in sharpness to an Edge HD built in 2019-2024, at native F/10. (Edge HD F/7 reducer has the same issue of being obsolete, I have one, and it is aweful, and everything I've seen online points to some form of optical improvements being made on units built in the last 4 or 5 years, with the Edge HD 8 being able to correct to a full-frame despite the baffle tube being slightly too small for it, causing some corner vignette.) |
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Ed Litoborski:
I just wonder it the Starazonia is worth the cost to upgrade?
The Starizona 6.3 reducer's spot size is significantly smaller than the celestron one, your sharpness will increase across the entire FOV- infact it'll be smaller even at center vs an uncorrected field.
Its a nearly 2 times increase in sharpness.
It's similar in sharpness to an Edge HD built in 2019-2024, at native F/10.
(Edge HD F/7 reducer has the same issue of being obsolete, I have one, and it is aweful, and everything I've seen online points to some form of optical improvements being made on units built in the last 4 or 5 years, with the Edge HD 8 being able to correct to a full-frame despite the baffle tube being slightly too small for it, causing some corner vignette.)
Is the EdgeHD reducer really that bad? Or is this only older models? I recently bought an EdgeHD 8, but haven't yet bought a reducer (Celestron's are still on backorder). I asked a question on here a few weeks ago about buying a Celestron vs. Starizona reducer. I was told the Starizona is a reducer + flattener is only for non-HD Celestron SCTs and the Celestron is specifically a reducer only; not a flatter since that's already built into the HDs optics. I keep hearing people criticize the Celestron F/7 reducers though, but don't know of any better options that exist. If so, seems kind of a moot point for the time being? I also see people post images on here using that Celestron reducer and it the images still seem high quality.
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I think these kinds of answers should always be qualified with sensor size. It's going to make a big difference if you're using a full frame or APS-C verses a 585.
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I plan to use my 2600 mc pro
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Derek Vasselin:
Ed Litoborski:
I just wonder it the Starazonia is worth the cost to upgrade?
The Starizona 6.3 reducer's spot size is significantly smaller than the celestron one, your sharpness will increase across the entire FOV- infact it'll be smaller even at center vs an uncorrected field.
Its a nearly 2 times increase in sharpness.
It's similar in sharpness to an Edge HD built in 2019-2024, at native F/10.
(Edge HD F/7 reducer has the same issue of being obsolete, I have one, and it is aweful, and everything I've seen online points to some form of optical improvements being made on units built in the last 4 or 5 years, with the Edge HD 8 being able to correct to a full-frame despite the baffle tube being slightly too small for it, causing some corner vignette.)
Is the EdgeHD reducer really that bad? Or is this only older models? I recently bought an EdgeHD 8, but haven't yet bought a reducer (Celestron's are still on backorder).
I asked a question on here a few weeks ago about buying a Celestron vs. Starizona reducer.
I was told the Starizona is a reducer + flattener is only for non-HD Celestron SCTs and the Celestron is specifically a reducer only; not a flatter since that's already built into the HDs optics.
I keep hearing people criticize the Celestron F/7 reducers though, but don't know of any better options that exist. If so, seems kind of a moot point for the time being?
I also see people post images on here using that Celestron reducer and it the images still seem high quality. It is VERY bad. I am diffraction limited at F/10, but at F/7 I am limited to the spot size of the reducer, about 1.6". My reducer was built in 2021. The drastic increase in sharpness is more desireable than increased speed, so don't use a reducer. Just take more exposure per target, sure it'll take longer but it's going to end up a better image.
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Derek Vasselin:
Ed Litoborski:
I just wonder it the Starazonia is worth the cost to upgrade?
The Starizona 6.3 reducer's spot size is significantly smaller than the celestron one, your sharpness will increase across the entire FOV- infact it'll be smaller even at center vs an uncorrected field.
Its a nearly 2 times increase in sharpness.
It's similar in sharpness to an Edge HD built in 2019-2024, at native F/10.
(Edge HD F/7 reducer has the same issue of being obsolete, I have one, and it is aweful, and everything I've seen online points to some form of optical improvements being made on units built in the last 4 or 5 years, with the Edge HD 8 being able to correct to a full-frame despite the baffle tube being slightly too small for it, causing some corner vignette.)
Is the EdgeHD reducer really that bad? Or is this only older models? I recently bought an EdgeHD 8, but haven't yet bought a reducer (Celestron's are still on backorder).
I asked a question on here a few weeks ago about buying a Celestron vs. Starizona reducer.
I was told the Starizona is a reducer + flattener is only for non-HD Celestron SCTs and the Celestron is specifically a reducer only; not a flatter since that's already built into the HDs optics.
I keep hearing people criticize the Celestron F/7 reducers though, but don't know of any better options that exist. If so, seems kind of a moot point for the time being?
I also see people post images on here using that Celestron reducer and it the images still seem high quality.
It is VERY bad. I am diffraction limited at F/10, but at F/7 I am limited to the spot size of the reducer, about 1.6". My reducer was built in 2021.
The drastic increase in sharpness is more desireable than increased speed, so don't use a reducer. Just take more exposure per target, sure it'll take longer but it's going to end up a better image.
+1
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Ed Litoborski:
I plan to use my 2600 mc pro Then, it's not even a question...
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Tony Gondola:
Ed Litoborski:
I plan to use my 2600 mc pro
Then, it's not even a question... Especially with the spot size of the Starizona. I'd like to see starizona make a crayford focuser that surrounds the reducer to fix the problem of backspacing and mirror shift.
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Thanks for everyone's feedback
Looks like a Starzonia reducer/flattener as Christmas Present for myself may be in order.
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2.81
0.90
8.11
5.94
2.81
5.08
1.51
